funny clock error with dualboot osx - ubuntu

[Eric Dunbar]

On Fri, 04 Feb 2005 19:20:00 +0100, R. Mattes <rm at mh-freiburg.de> wrote:
> altern wrote:
> 
> > hi
> >
> > i have dualboot with Warty and OSX and i get this funny problem.
> > I set the clock to the right time on OSX, launch Ubuntu and the time
> > is one hour too late. Then i set Ubuntu to the eight time, reboot
> > under OSX and the time in OSX is one hour too advanced.
> >
> > ?????????????!!!!!!!!!!!!!!
> 
> No need to despair ;-)
> 
> MOSX is one of those old-fashioned operating systems that set the
> on-board clock to
> local time. Your profesional Linux system sets it to Universal Time (UTC).
> The easiest (but not the most elegant) solution is to tell your Linux
> that the clock
> returns local time :-/
> I've not enough time to elaborate but a quick glance at the manpage for
> 'hwclock' should
> be enough (hint: look at /etc/adjtime

There's a chance it has something to do with day-light savings time
and/or your time zone selection in either OS X or in Ubuntu. Check to
see what yours is set to and make the appropriate adjustment. My
Ubuntu-OS X dual boot has no such issues.

Eric.